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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H
#define GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/rpc_service_method.h>
#include <grpc++/impl/codegen/serialization_traits.h>
#include <grpc++/impl/codegen/server_interface.h>
#include <grpc++/impl/codegen/status.h>
namespace grpc {
class Call;
class CompletionQueue;
class Server;
class ServerInterface;
class ServerCompletionQueue;
class ServerContext;
class ServerAsyncStreamingInterface {
public:
virtual ~ServerAsyncStreamingInterface() {}
virtual void SendInitialMetadata(void* tag) = 0;
private:
friend class ServerInterface;
virtual void BindCall(Call* call) = 0;
};
class Service {
public:
Service() : server_(nullptr) {}
virtual ~Service() {}
bool has_async_methods() const {
for (auto it = methods_.begin(); it != methods_.end(); ++it) {
if (*it && (*it)->handler() == nullptr) {
return true;
}
}
return false;
}
bool has_synchronous_methods() const {
for (auto it = methods_.begin(); it != methods_.end(); ++it) {
if (*it && (*it)->handler() != nullptr) {
return true;
}
}
return false;
}
bool has_generic_methods() const {
for (auto it = methods_.begin(); it != methods_.end(); ++it) {
if (it->get() == nullptr) {
return true;
}
}
return false;
}
protected:
template <class Message>
void RequestAsyncUnary(int index, ServerContext* context, Message* request,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq, void* tag) {
server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
notification_cq, tag, request);
}
void RequestAsyncClientStreaming(int index, ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq,
void* tag) {
server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
notification_cq, tag);
}
template <class Message>
void RequestAsyncServerStreaming(int index, ServerContext* context,
Message* request,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq,
void* tag) {
server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
notification_cq, tag, request);
}
void RequestAsyncBidiStreaming(int index, ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq,
void* tag) {
server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
notification_cq, tag);
}
void AddMethod(RpcServiceMethod* method) { methods_.emplace_back(method); }
void MarkMethodAsync(int index) {
GPR_CODEGEN_ASSERT(
methods_[index].get() != nullptr &&
"Cannot mark the method as 'async' because it has already been "
"marked as 'generic'.");
methods_[index]->ResetHandler();
}
void MarkMethodGeneric(int index) {
GPR_CODEGEN_ASSERT(
methods_[index]->handler() != nullptr &&
"Cannot mark the method as 'generic' because it has already been "
"marked as 'async'.");
methods_[index].reset();
}
private:
friend class Server;
friend class ServerInterface;
ServerInterface* server_;
std::vector<std::unique_ptr<RpcServiceMethod>> methods_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H
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